Telescopic sight



Feb. 6, 1934. K. JUNG i LTEILESGOPIC SIGHT Filed Aug. a. 1929 l NVENTORQ ATTORNEY y Patented Feb. 6, 1934 1,946,213 rELEscorIc sleur Karl Jung,Munich, Germany Application August 8, 1929, Serial No. 384,420,` and inGermany October 22, 1928 2 Claims.

`The object of this invention is to remove various defects in telescopicsights.

One of these defects is the comparative difficulty of aiming, and moreparticularly of aiming o quickly, due to the distance between the ocularand the eye, a substantial spacing (generally about 80 mm.) beingrequired-by reason of Fthe recoil on firing. Another defect is thattelescopic sights are delicate instruments, easily put out of ladjustment by rough handling or falling, this being particularly thecase with terrestrial lens systems. In the case of prism telescopes the`prisms tend gradually to become loose. Galileian telescopes have notheretofore successfully been ,applied to gun sights, owing to thedifficulty of making the crossed wires visible, though for shooting intwilight such telescopes have a marked advantage by reason of theirlarge aperture. A general defect of all telescopic sighting 0instruments heretofore in use is that they require mounting on the gunbarrel, generally necessitating dicult Welding operations, which v areliable to injure the barrel through aiecting' the structure of thesteel.

My invention aims at removing these defects without loss of efficiencyin other respects.

According to the invention the telescope is mounted on the re arm indirect contiguity to the eye of the. user, the instrument having at 3Qthe ocular end a shock absorbing eye-rest fitting against the bony rimof the orbita. The telescope may be anchored to the barrel or the breachby means of rails, or may be fixed to the stock without rails connectingit to the barrel. In the case of a telescope with erecting prisms, ofthe Porro type, the prisms and the objective may be combined to form arigid unit, so that neither mem- Aber can become loose. To enable aGalilean telescope to be used the ocular may have a ne hole, whereby agauge on the inside ofthe objective is visible in the enlargeduprightimage of the target. For parallel adjustment there maybe twoparallel telescopes, a xed distance apart, one being adapted to bepushed into the breec when the bolt has been removed.

Several examples of instruments according to the invention are shown inthe annexed drawing.

Fig. 1 is an elevation, partly in section, of a sight with a Porrotelescope',

Fig. 2 being a. cross section of thetelescope on a larger scale, andvFig. 3 a section on the line 3-3 of Fig. 1.

Fig. 4 is an elevation of a gauge used with this 5 telescope.

Fig. 5 illustrates one method of attaching the sight to the stock of arifle,

Fig. 6 being a vertical cross section of the stock and sight taken onlines 6-6 of Figure 5.

Fig. 'l illustrates a device for attaching the telescope to its holder.

Fig. 8 is a sectional view of the eye piece to be inflated with eitherair or liquid.

Referring first to Figs. 1 to 3, the prisms P, P' of the Porro telescopetherein shown are rigidly xed to a steel plate St, the prisms beingwithin a steel casing N, which also encloses the objective O and ocularo, these parts being inseparably connected for ordinary purposes of use.The holder T of the telescope is fixed to the rie in such position thatthe eye of the user is applied directly to the ocularin the same way aswhen using field glasses. To protect the sight from injury by recoil ofthe rearm there is fitted to the ocular holder a ring G of shockabsorbingmaterial, which isv pressed against the bone around the orbita.This ring G may be hollow and lled with liquid, e. g.glycerine-g'elatine, but it may also be solid, consisting for example ofaerated rubber. The holder T is inserted into a socket R pivoted at R10in a cavity R11 in the gun stock. A spring F presses against one wallofthe socket and tends to press the latter firmly against a stop Wformed by a part of the wall of the cavity R11.

The gauge C shown in Fig. 4 has an elevation scale marked thereon; thedivisions of the scale may be of different colours, to facilitate thereading thereof.

Figs. 1, 5 and 6 show for mounting'the telescope a steel rail S sunk ina central groove in the stock H, the front end of the rail being welded,screwed or soldered to the breech. To the rear end of the rail isattached a spring f (appearing in Fig. 5) carrying a socket R, for thelower part of the telescope holder T. For steadying the socket R thereis a second spring F, which also engages'the rail S, and which pressesthe socket and spring f rmly against a rest W, formed by part of thewall of a cavity in the stock.

According to Fig. 'l the telescope D is not directly connected to theholder, the connection being Vmade by a'spring E of substantial length,only a. short part of which is free to bend. This arrangement aordsadditional security against injury by recoil.

Having now particularly describedand a'scertained the nature of my saidinvention and in what manner the same is to be performed, I declarethat'what I claim is:

Losanna to said telescope and pivotally mounted in the stock, a. springresiliently supporting said fo'ot in the stock, vsaid telescope beingprovided with an elastic cushion at one opening and disposed to have theorbita of the person sighting leaning against the said cushion of thetelescope to transmit shocks imparted thereto partly to the orbita andpartly to the shoulder or such person.

KARL JUNG.

